Global Patent Index - EP 0995056 A1

EP 0995056 A1 2000-04-26 - SYNCHRONISED GEARBOX

Title (en)

SYNCHRONISED GEARBOX

Title (de)

SYNCHRONISIERTES GETRIEBE

Title (fr)

BOITE DE VITESSES SYNCHRONISEE

Publication

EP 0995056 A1 (FR)

Application

EP 99918021 A

Priority

  • FR 9901035 W
  • FR 9805674 A

Abstract (en)

[origin: FR2778443A1] The invention concerns a motor vehicle gearbox (10), comprising at least two parallel primary (14) and secondary (16) shafts, respectively connected in rotation to an engine and, through a main transmission (20), to a wheel (18), and wherein the primary shaft bears a first idler (22) geared to a second stationary pinion (24) borne by the secondary shaft, which first idler (22) is capable of being jaw clutched on the primary shaft for transmitting engine power to the wheel (18). The invention is characterised in that it comprises self-disengaging controlled means (28) for accelerating or braking selectively the primary shaft (14) which bears the idler (22) so as to synchronise them before linking them in rotation, self-disengaging acceleration means for accelerating the primary shaft (14) as long as its speed is less than that of the idler (22), and self-disengaging braking means for braking the primary shaft (14) as long as its speed is greater then that of the idler (22).

IPC 1-7 (main, further and additional classification)

F16H 3/12

IPC 8 full level (invention and additional information)

F16H 3/12 (2006.01)

CPC (invention and additional information)

F16H 3/12 (2013.01); Y10T 74/19242 (2013.01); Y10T 74/19284 (2013.01); Y10T 74/19288 (2013.01)

Citation (search report)

See references of WO 9957459A1

Designated contracting state (EPC)

DE ES GB IT

EPO simple patent family

FR 2778443 A1 19991112; FR 2778443 B1 20020405; EP 0995056 A1 20000426; KR 20010021702 A 20010315; US 6289757 B1 20010918; WO 9957459 A1 19991111

INPADOC legal status


2003-07-23 [18W] APPLICATION WITHDRAWN

- Effective date: 20030530

2002-08-21 [RAP1] TRANSFER OF RIGHTS OF AN APPLICATION

- Owner name: RENAULT S.A.S.

2002-05-08 [17Q] FIRST EXAMINATION REPORT

- Effective date: 20020320

2000-04-26 [17P] REQUEST FOR EXAMINATION FILED

- Effective date: 20000105

2000-04-26 [AK] DESIGNATED CONTRACTING STATES:

- Kind Code of Ref Document: A1

- Designated State(s): DE ES GB IT